npm with node-sass and autoprefixer

Question

I use node-sass to compile all my Sass files to a master.css. This works well but now I want to add prefixes. I would like to use only the npm, no Gulp or Grunt.

Here my

Answer 1

Let's say we have styles.sass file in sass directory. I've used something like this (my package.json):

{
 "scripts": {
    "c":"node-sass sass/styles.sass -o .|postcss styles.css -u autoprefixer -r",
    "w":"watch 'npm run c' sass"
 }
}   

terminal command: npm run w. At this point each saving of styles.sass file will produce compiled and prefixed styles.css file automatically. I have postcss-cli, node-sass and watch packages installed globally.